Author Topic: 750 Revving  (Read 667 times)

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6 fingered man

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750 Revving
« on: September 09, 2009, 11:39:14 AM »
My 750 wont rev down when I let of the throttle, if it is under load it will go down and stay. but just to rev up and down sometimes, not all the time, it won't rev down. The throttle is returning. the spring is there. I cleaned the carbs not to long ago....  Sticky slide? Air leak? Any ideas before i pull them off again? Thanks in advance!

Offline Johnny5

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Re: 750 Revving
« Reply #1 on: September 09, 2009, 11:42:24 AM »
Clogged slow jets? Air leak on the boots?
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Offline Duke McDukiedook

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Re: 750 Revving
« Reply #2 on: September 09, 2009, 11:47:42 AM »
Clogged slow jets? Air leak on the boots?

+1
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6 fingered man

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Re: 750 Revving
« Reply #3 on: September 09, 2009, 12:05:03 PM »
So I check for an air leak and off they come.....    :(   Just started riding it to. Teach you to clean the carbs then let the bike sit for months...

Online Don R

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Re: 750 Revving
« Reply #4 on: September 09, 2009, 12:09:35 PM »
Mine is doing it too. Let me know what you find.
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Offline Johnny5

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Re: 750 Revving
« Reply #5 on: September 09, 2009, 12:10:39 PM »
"Hello. My name is Inigo Montoya. You killed my father, prepare to die."

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Offline Spanner 1

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Re: 750 Revving
« Reply #6 on: September 09, 2009, 01:52:47 PM »
You need a vacuum carb. synch. to cure your problem.... slides out-of-step with each other will cause the motor to rev. up like you describe with the throttle closed.
If your sure it's a carb problem; it's ignition,
If your sure it's an ignition problem; it's carbs....

Offline ekpent

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Re: 750 Revving
« Reply #7 on: September 09, 2009, 02:25:28 PM »
Be sure to check the slides or throttle valve also for any type of build up. If your gas has any rust at all a film will build up on them,only have to stick a small fraction to make it hold at 3,000 +. Had the problem before,stumped me for awhile.